==== REQUIRED BASIC INFO OF YOUR IREDMAIL SERVER ====
- iRedMail version (check /etc/iredmail-release):
- Deployed with iRedMail Easy or the downloadable installer?
- Linux/BSD distribution name and version:
- Store mail accounts in which backend (LDAP/MySQL/PGSQL):
- Web server (Apache or Nginx):
- Manage mail accounts with iRedAdmin-Pro?
- [IMPORTANT] Related original log or error message is required if you're experiencing an issue.
====

/etc/iredmail-release: 1.6.3 MARIADB edition
Downloadable installer
Debian 11 (Buster)
Mysql
Nginx
Currently only running free version to evaluate.

Outgoing messages are fine.
All attempts to send to an account on the iredmail server are rejected

The logs show that postfix doesn't like my smtp relay:
"[192.168.111.16]: Client host rejected: Access denied;"

But 192.168.111.0/24 is listed in "mynetworks"
"mynetworks = 127.0.0.0/8 192.168.111.0/24"

Apparently something else is overruling the postfix settings in main.cf

Any clues appreciated